Plug-seat switch.



PATBNTED JULY 16, 1907 E. E. YAXLEY.

PLUG SEAT SWITCH.

APPLICATION FILED JULY 21, 1906.

t'frzedaed ERNEST E. YAXLEY, OF CHICAGO, ILLINOIS.

PLUG-SEAT SWITCII.

Specification of Letters Patent.

Patented July 16,190A

Application filed July 21,1906. Serial No. 327,220.

To all whom it may concern:

Be it known that I, ERNEST E. YA LEY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois. have invented a certain new and useful Improvement in Plug-Scat Switches, of which the following is a full, clear, concise, and exact description, reference being bad to the accompanying drawings, forming a part oi this specification.

My invention relates to plug seat switches, and has for its object the improvement of the mechanical construction thereof whereby the plug may be more effective than hitherto in operating plug seat switches.

In practicing my invention, I prefer to employ a bcll crank lever pivoted at its elbow, one end of the mechanism efiectively as the plug, by reason of thesaid interposed roller mechanism, is not sufiiciently impeded in its downward progress to prevent the cord weight from fully restoring the plug to its scat. Hitherto great difliculty has been ioundin the operation of plug scat switches because of the degree oifrictional engagement afforded between the plugs and the spring elements of the switches engaged thereby.

In the embodiment of the invention employing a bell crank lever, I desirably dispose the contact rnc1nbers of the. switch horizontally, and cause the operating member of .the switch to be engaged by a roller carried ,upon the contiguous end of the operating lever. lhe other end of the operating lever is also provided with a roller which is disposed slightly in the path of the descending plug and which rides upon the plug to effect actuation of the lever. whereby the operating member of the switch is actuated.

In another embodiment or my invention, the antifriction device is mounted upon the element or portion oi-thc switch that is to be actuated, the aniid'riction device in this instance being likewise a roller, which in all forms of the invention is preferably cylindrical, though I do not wish to be limited to cylindrical rollers.

I will explain my invention more lully by reference to the accompanying drawing, showing two preferred embodiments thereof, in which- Figure 1 is a view in sectional elevation ol' the embodiment of the invention including an operating bell crank lever. Fig. 2 is a plan view Grant structure shown in Fig. 1. Fig. 3 is a view in sectional elevation showing an embodiment of the invention wherein the switch elements are vertically disposed.

Like parts are indicated by similar characters of reference throughout the different figures.

I have illustrated a cord or link circuit plug (1 to which a cord 11 is extended, which cord is desirably associated with the usual pulley weight, which need not be shown, as its oilice is so well understood. When the plug is not in use, it rests within a socket which may be secured to the cabinet work oi'a swiich-lmard, as is understood. The socket c has-a recess (2 whereby an anti-lriction device may be projected into .the bore of the socket when the plug'is removed, so that said plug will engage the same when the plug is being rcstored, whereby saidanti-friction device may operate the plug seat switch mechanism. In the form shown in Figv 1, the anti-friction device is composed preferably of two cylindrical rollers e and f carried upon the free ends of a bell crank lever g which is pivoted at its elbow, the roller f being desirably made of insulating mat eri al The elements a and constitute the ncierred form of bell crank lever device. When the plug a is liited, the element 7i of the switching device,

which is desirably a contact spring of the switching mechanism, operates upon the roller f and thereby upon the bell crank lever g to thrust the roller 0 within the bore of the socket c, said element It intliis operation breaking engagement with its normal contact 1' and making connection with its alternate contact is. When the plug a descends, the anti-friction mechanism is engaged thereby, whereby the element 71 is moved in a reverse direction to break connection with its alternate contact 7; and make conncctionwith its normal contact 2'. In the construction shown in Fig.- 3, the element h carries the roller 0 directly. in this latter construction, when the plug a is removed, the

spring 71, by reason of its resiliency, projects the roller switch actuating anti-l'riction device interposed bctween the plug and the switching mechanism andoperated by the plug,though I prefer the construct ion including a sockctcd portion adapt ed to receive a plug in its bore, a switch actuating bell-crank lever, rollers .upon the ends of the bell crank lever, and an actuating clement serving to engage one of said rollers and, when the plug is removed, to force the other roller into the path of the plug as it rciurns to its socket adapted to receive a plug in its bore, a switch actuating hell crank lever, rollers upon the ends of the bell crank lever, and an actuating element serving to engage one'ofsaid rollers and, when the plugis removed, to force the other roller into the path of the plug as it returns to its socket. I

1.. A ,piug seat switch including a'socketed portion adapted to receive a plug in its bore, a switch actuating hell (Blillik lever device, a roller upon one end of said lever device, nd an actuating element serving to engage said roller and, when the plug is removed, to force the lever device into the path of the plugas itretnrns to.lts socket. 3. A plng seat switch including a socketed portion adapted to receive a plug in its bore, a switch actuating hell crank lever device, a roller upon one end of said lever device, and an actuating element serving to engage. the other end of said lever device and, when the plug'lis removed, toioree the roller into the path of the plug asi-"it returns to'lts socket.

4. A plug seat switch including a socketed portion adapted to receive a plug in its bore, a switch actuating hcll crank lever device, and an actuating element serving to engage onefend of said lever device and, when the plug is removed, to force the other end of the lever device into the path of the plug as it returns to its socket.

5. A plug sent switch including a socketed portion.

adapted to receive a plug in lts.hore,-a.switch actuating lcver. rollers upon the ends oi the lever, and an actuating clement serving to engage one of said rollers and, when the.

plug is removed, to force the other roller into the path of the plug as it returns to its socket.

ii. A-plug seat switch including a socketed portion adapted to receive'a plug in its hore,a switch aciuatinglevcr device. a roller upon one end of said lever device, and an actuating element serving tecngage said roller and, when the plug is removed, to force the lever device into the path oi the plug as it returns to its socket. I

7. A plug sent switch including a sockcted portion adapted to receive a plug in its here,a switchactuatiuglever device, a roller upon one end of said lever device, and an actuating element serving to engage the other end of said lever device and, when the plug is removed, to force the rollcr 'into the path df the plug as it returns to its socket.

8. A plug scat switch including a socketed portion adapted to receive a plug in its bore, a switch actuating leverdevice, and an actuating element serving to engage one end oif said; lever device and, when the plug is-removed, to force the other end of the lever device into the path of the plug as it returns to its socket.

9. A plug seat switch, including a seat portion adapted to. receive a ping, a switch-actuating hell crank lever, rollers upon the ends of the bell crank ieve'r, and an actuating-element serving to engage one of said rollers and, when the 'plug' is removed, to force the other roller into the path oi the plug as' it returns to its seat.

It). A plug seat switch including a seat portion adapted to receive a plug, a switch actuating hell craiik lever device, a rollerupon one'en dot said lever device, and an actuatlug element servingto engage said roller and. when the plugis remov'edfto force the lever device into the path of the plug as it returns to its seat.

11. A plug sent switch including a seat portion adapted to receive a plug,'fla switch actuating hell crank lever device, a roller upon one end 01' said lever device, and an actuating element serving toeng'age the other end of said lever device and, when the plug is removed, to force the roller into flle path of the plug as it returns to its seat;

12. A plug seat switch including a'seat portion adapted to receiver: plug, a switch attuating bell crank lever device, and an actuating clement, serving to engage ()lll, mid of said lever device and, when the plug is removed, to force the other endof the lever device into the path oi the plug as it returns to its seat.

13. A plug seat switch including a seat portion adapted -to receive a plug, a switch actuating lever, rollers upon the ends of the lever, and anactuating element serving to cilgag'c one of said rollers and, when the plug is removed, to force the other roller into the path of the plug as it returns to its seat.

14. A plug seat switchincluding a seat portion adapted to receive a plug, a switch actuating lever device, a roller upon one end oi said lever device, and an actuating element serving to-engage said roller and, when the plug is removed, to force the lever device into the path of the plug as it returns to its seat.

15. A plug seat switch including a scat porlion adapted to receive a plug, a switch actuating lever device, a roller upon one end of said ievcr device, and an actuating element serving to engage the other end oi saidlcverdcviire and, when the plug is removed, to iorce the roller into ,the path of the plug as it returns to its seat.

16. A plug seat switch including a scat portion adapted to receive a plug, a. switch actuating lever device, and an actuating element serving to engage one end of said lever devlcepnd, when the plug is removed, to force the other end of the lever device into the path of the plug as it returns to its scat.

ing the plug, a switch actuating element, rollers upon the ends of said element, and'an actuating elemeni serving to cngageone of said rollers, and, when the plug is removed,

'to force the companion roller into the path of the plug as it returns to its scat.

18. A plug seat switch including a portion for supporting the plug, a switch actuating clement, a roller upon one end of said clement, and-an actuating clcmcni. serving in engage said roller, and, when the plug is removed, to force the first aforesaid element into the path oi the plug as it returns to its seat. v

19. A plug seat switch including a portion for supporting the plug, a switch actuating element, a roller upon one end oi said element, and an acluaiinp; element serving to engage a portion of the switch actuating element removed from said roller, and, when the plug is removed, to force the roller into the path of iheplug as it returns to its seat.

20'. A plug scat switch including a seat portion udapicd to i ccivc a plug, a switch actuating lover device, and an actuating clcmcni serving to engage said lever device. and, when the plug is removed, to force a portion of the lever device into the path 01' the plug as it returns to its sent.

21. A plug scat switch including a seat portion, switch actuating mechanism including a plvoiaily mounlcd elcment adapted to lie in the path oi the plug'as it descends to its seat, and means for placing a portion of said elcment in the path of the descending plug upon a removal oi the plug. I

' 22.. A plug seat switch including a seat portlon,swltch actuatingmechanism including a. pivotaily mounted element adapted to lie in the path of the plug as it descends to its seat, and means ,ior placing a portion of said element in the path ot-the descending plug upon a removal of the plug, said means being included in the switch in he controlled.

'23. A plug seat switch including a seal: portion, switch actuating mechanism including a pivotaily mounted lever adapted to lie in the path of the plug as it descends -to its scat, and means included in the savltcht o he controlled, for placing a portion oi snld element in the path oi the descending plug upon a removal ofthe plug.

in witn ss whereof, I hereunto subscrlhe my name this 1.7i'h duy oi'July, A. i). 1906. I

i ununs'r n. YAXLnvi Witnesses G. L. Cums,

Lnon G. .S'rron; 

